Switch.



J. SACHS.

SWlTCH.

APPLICATION FILED APR. 11; ms.

Patented Feb. 26, 1918.

m Z a ws vh Z J A ffarneg' UNITED STATES PATENT OFFICE.

JOSEPH shorts, or m'rrom), oommc'rrcu'r.

SWITCH.

Application filed Aprfl 17,

To all whom it may concern:

Be it known that I, J OBEPH SACHS, a cltizen of the United States, residing at Hart-. ford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Switches, of which the following is a specification.

This invention relates to switches, and while the invention is susceptible of general use in the art indicated, it is pf particular utility when incorporated in a pendant snap switch such as shown in the drawings accompanying and forming part ofthe present specification, wherein I represent in detail. that one of the several forms of embodiment of the invention which I have selected for illustration in said drawings. Among the objects of the invention are the provision of an article of the character set forth, which is simple in construction, quite compact, the parts of which can be inexpensively'made and readily assembled and which when correlated are positive and certain in action.

Referring to said drawings: I

Figure l is a side elevation. of a switch involving my invention.

Fig. 2 is a longitudinal vertical sectional view of said switch.

Fig. 3 is a top plan view of the same with the upper'section of the casing removed.

Fig. 4 is a longitudinal central section, the section being at right angles to that of Fig. 2.

Fig. 5 is a top plan view of the supporting body.

Fig. 6 is av perspective view of the switching member and its support, actuating means and certain cooperative elements, including the snap movement.

Fig. 7 is a detail view of a gear and cooperative actuating members. 4 Like characters refer to like parts through.- out the several views.

The different parts of the switch are sustained by a suitable body such as that denoted by 2 and which is of some suitable insulating material as porcelain. In practice this body is surrounded by a suitable casing as 3 generally made of sheet metal and which as shown comprises lower and upper sections connected in some convenient manner as 'by a screw-thread joint. The casing 3 is connected with the insulating body 2 in some convenient manner. As shown the lower or main section of said casing has a perforation in its bottom'to receive the screw 4, which extends through a Specification of Letters Patent.

1915. Serial No. 22,074.

hole 5 in the bottom of the insulating body 2. Said hole 5 opens into the depression 6 shown as square, and which receives the nut 7 of suitable insulating material, the nut being of a shape corresponding to that ofthe depression 6, so that the nut is held against turning in the depression 6 when the Patented Feb. 26,1918,

threaded portion of the screw 4 is screwed into'said nut. This depression 6 extends approximately centrally frorh the cavity or chamber 8 of the body 2. The inner end or top of the screw 4, it will be noted, is below or extends short of the bottom of the cham her '8. In this cavity or chamber 8 is fitted the base portion of a metallic support here inafter described, from which as will be evident the screw 4 andhence the casing 3 is insulated from said support.

Between the upper or removable ortion of the casing 3 and the insulating ody 2, the insulation 10 may be disposed, the upper marginal portion of said insulation 10 overlying the inner externally shouldered end of the bushing 12 inclosed by the central neck 13 of said upper portion of the casing. Through this insulating bushing the wires 14 extend'and are connected as by screws 15 with the bodies of the wire connecting and contact members 16. Said bodies fit flatwise against the top of the insulating body 2 and are held in place in some coin venient manner as by screws 17 extending through the insulating body from below and the threaded upper ends of which fit threaded openings in the bodies of the respective wire connecting and contact member 16. These wire connecting and contact members 16 as illustrated have resilient U-shaped contact portions '18 which depend or extend into the chamber 8, being diametrically o posite each other and being adapted to' e engaged by a' switching member such a's20 when the latter is on. The switching memher 2 is mounted for oscillation or swing.- ing movementand comprises companion side branches connected by the pin 21 of metal, constituting a suitable bridging element.

I will now describe a suitable support for the switching member 20, which support can be made from metal formed up in some suitable manner. This support 1s preferably made in one piece, and comprises twd sides 22 connected by the cross piece 23, said sides or checks 22 having lips 24 at their ends bent toward each other, transversely alined and slightly separated. This forms a casing or box-like support or receiver. The yoke-like switching member 20 straddles the sides 22 and is pivotedthereto at 25, the center of motion of the switching member being located practically centrally or midway of the sides or cheeks 22. The sides or cheeks 22 have near-theirends on their up er edges and in proximity to the lips 24 t e outturn'ed lugs 26 constituting suitable stops, for arresting the switching member 20 when in the on and the off positions thereof. .The sides 22 are provided with outwardly disposed feet 27 resting on tuating member has a body as 32 generally consisting of a fiat metal strip mounted for back and forth movement between and thus guided by the sides 22 aided by'the end lips 24, the latter maintaining the rack members 32 in mesh with the two sets ofteeth 33 and 34 of ,the gear member 29. The heads or manipulating portions of the actuating members 30 and, 31 as represented, consist of insulating buttons molded upon and suitably anchored to the rack members 32. The insulating body2 has holes 35 opening into the chamber 8 to receive and guide the two button or manipulating portions of the actuating members 30 and 31, the casing 3 having suitably positioned perforations as 36 also intended for the passage of said buttons. The gear member or pinion 29, constituting aconvenlent motlon transferring device, has as shown a peripheral notch into which is driven the pin 37, the pin being located approximately centrally between the two sets of teeth 33 and 34:. The outer ends of this pin project through transversely-alined slots 38 formed in the sides 22. Both said slots 38 are arcuate, their arcs being struck from the center of motion of the gear member 29.

v20. By moving the gear connected ends of reversed, by reason of which the switching member can be moved between its on and ed positions with an accelerated or snap movement.

In Figs. 2 and 6 the switching member is in the off position, the actuating member 30 being down and the actuating member 31 being up. By thrusting upward on the actuating member 30 the rack teeth of the body or rack portion 32 thereof will rock the gear 29 in the direction of the arrow in Fig. 7, thus swinging the pin 37 toward and then across the dead center line to effect a corresponding function with respect to the outer ends of the two springs 39 and at the same time through the teeth 34 to lower the actuating member 31. When the outer ends of the springs cross the dead center line the switching member 20 is instantly moved from off to on position. With the actuator 31 down and the actuator 30 up, the switching member can be moved to off by thrusting upward on the actuating member 31.

The rack or body portions of the actuating members 30 and 31 are provided at opposite curved stop faces 32, which alternately engage the plain portions of the peripheryof the gear member 29 to limit the longitudinal or endwise movement of the two actuat ing members. Thatis to this provides a simple construction for arresting said actuating members when the switching member is in the on and the off positions.

\Vhat I claim is 1. An electric switch comprising a support,a yoke like switching member straddling and pivotally connected with said support, a motion transferring member carried y the support and provided with laterally extending portions, springs connected with said laterally extending portions and with the switching member, those ends of the springs which are connected With the laterally extending portions being normally at one side of a dead center line intersecting 1 the center of motion of. said motion trans ferring member and the center of connection between the springs and the switching memher, said motion transferring member being oscillatory to move those ends of the springs which are connected with said laterally extended portions alternately across said dead center line and thereby cause on and off movements of the switching member, and independent actuating members for rocking said motion transferring member.

2. An electric switch comprising a sapport, a rocking gear carried by the support, actuating members also carried by said support, having racks to mesh with the teeth of the gear member and adapted to rock said gear member alternately 1n opposite directions, a swinging switching member'mounted on said support, and spring means connected with the switching member and with the gear, that end of the spring means which is connected with thefgear being normally at one side of a dead center line intersecting the center of motion of said gear, and the center of connection between the spring means and the switching member.

3. An electric switch com rising a switching member, a motion trans erring gear movable about the same axis as the switching member, spring means connected -with the motion transferring gear and with the switching member, the motion transferring gear connected end of the spring means being normally at one side of a dead center line intersecting the center of motion of the motion transferring gear and the switching member and the center of connection be tween the spring means and the switching member, said motion transferring gear being oscillatory to move that end. of thespring means which is connected therewith alternately across said dead center line, and

independent actuatin gear members in mesh with and for rocking said motion'transferring member. 4. An electric switch comprising a support, a rocking gear inclosed by the support, actuating members having racks, diametrically placed with respect tothe gear and the-teeth of which mesh with the teeth of the gear to rock said gear alternatelyin opposite directions, the racks bein inclosed and guided by the support, a switchin member straddling and plvotally connecte with the support, and spring means connected with the gear and with the switching'member, the gear connected end of the spring means being normally at one side of a dead center line'intersecting the center of motion of the gear and the center of connection between the spring means and the switching member.

5. An electric switch com rising a support, a rocking gear inclosed y the support, actuating members having racks, diametri call placed with respect to the gear and the teeth of which mesh with the teeth of the gear to rock said. gear alternately in op osite directions, the racks bein inclose and guided by the su port, a switchin member straddling and p votally connecte with the support, and spring means connected with the gear and with the switching member, the

member pivotally-mounted between the s des ear connected end of the spring means eaing normally at one side of a dead cent-er line intersecting the center of motion of the gear and the center of connection between the spring means and the switching member, said racks having means for limiting their opposite movements.

6. An electric switch comprising an insulating body having a chamber, a yoke-like support fixed within-said chamber, a gear member pivotally mounted between the sides of the support, a yoke-like switching mam ber straddling the support and mounted swinging movement, sprin connected with the switching member, t gear member having lateral extensions to which the springs are connected, and racks in mesh with the gear member for alternately oppositely oscillating the same, the racks having buttons extending to points outside the an insulating bod 7 An electric switch comprising an insulating body having a chamber, a yoke-like support fixed within said chamber, a car 8.5 of the support, a yoke-like switching member straddling the support and mounted for swinging movement, springs connected with the switching member, the gear member hav ing lateral extensions to which the sprin sare connected, and racks in mesh with t e gear member for alternately oppositely oscillating thesa'me, the racks having buttons extending to points outside the insulating body, said support having 'inturned lips overlying the racks to guide the same.

8. An electric switch com rising an insulating body having a cham r, a yoke-like support fixed within said chamber, agear member pivotally mounted between the sides of the support, a yoke-like switching inember straddling the support and mounted for swinging movement, springs connected with the switching member, the gear member hay 1 ing lateralextensions to which the sprin s are connected and racks in mesh with t e gear member for alternately oppositely oscillatingthe same, the racks having buttons extending to points outside the insulating In testimony whereof I aflix my signature lit in presence of two witnesses.

. JOSEPH SACHS.- Witnesses:

L. L. MARKEL, 7 HEATH SUTHERLAND. 

